检索结果-南通市图书馆

Endotoxin-induced alterations of adipose tissue function:a pathway to bovine metabolic stress

Journal of Animal Science and Biotechnology 2024年第4期15卷 1391-1407页

作者： Miguel Chirivi g.andres contreras Department of Large Animal Clinical Sciences Michigan State UniversityEast LansingMIUSA

During the periparturient period, dairy cows exhibit negative energy balance due to limited appetite and increased energy requirements for lactogenesis. The delicate equilibrium between energy availability and expenditure puts cows in a state of metabolic stress characterized by excessive lipolysis in white adipose tissues(AT), increased production of reactive oxygen species, and immune cell dysfunction. Metabolic stress, especially in AT, increases the risk for metabolic and inflammatory diseases. Around parturition, cows are also susceptible to endotoxemia. Bacterial-derived toxins cause endotoxemia by promoting inflammatory processes and immune cell infiltration in different organs and systems while impacting metabolic function by altering lipolysis, mitochondrial activity, and insulin sensitivity. In dairy cows, endotoxins enter the bloodstream after overcoming the defense mechanisms of the epithelial barriers, particularly during common periparturient conditions such as mastitis, metritis, and pneumonia, or after abrupt changes in the gut microbiome. In the bovine AT, endotoxins induce a pro-inflammatory response and stimulate lipolysis in AT, leading to the release of free fatty acids into the bloodstream. When excessive and protracted, endotoxin-induced lipolysis can impair adipocyte's insulin signaling pathways and lipid synthesis. Endotoxin exposure can also induce oxidative stress in AT through the production of reactive oxygen species by inflammatory cells and other cellular components. This review provides insights into endotoxins' impact on AT function, highlighting the gaps in our knowledge of the mechanisms underlying AT dysfunction, its connection with periparturient cows' disease risk, and the need to develop effective interventions to prevent and treat endotoxemia-related inflammatory conditions in dairy cattle.

关键词： Adipose tissue dysfunction Endotoxin Inflammation Insulin resistance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Adipose tissue lipolysis and remodeling during the transition period of dairy cows

引用

Journal of Animal Science and Biotechnology 2017年第4期8卷 787-798页

作者： g.andres contreras Clarissa Strieder-Barboza William Raphael Department of Large Animal Clinical Sciences College of Veterinary MedicineMichigan State UniversityEast LansingMI 48824USA

Elevated concentrations of plasma fatty acids in transition dairy cows are significantly associated with increased disease susceptibility and poor lactation performance. The main source of plasma fatty acids throughout the transition period is lipolysis from adipose tissue depots. During this time, plasma fatty acids serve as a source of calories mitigating the negative energy balance prompted by copious milk synthesis and limited dry matter *** research has demonstrated that lipolysis in the adipose organ is a complex process that includes not only the activation of lipolytic pathways in response to neural, hormonal, or paracrine stimuli, but also important changes in the structure and cellular distribution of the tissue in a process known as adipose tissue remodeling. This process involves an inflammatory response with immune cell migration, proliferation of the cellular components of the stromal vascular fraction, and changes in the extracellular matrix. This review summarizes current knowledge on lipolysis in dairy cattle, expands on the new field of adipose tissue remodeling, and discusses how these biological processes affect transition cow health and productivity.

关键词： Adipose tissue macrophages Adipose tissue remodeling Lipolysis Transition dairy cows

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A proposed modulatory role of the endocannabinoid system on adipose tissue metabolism and appetite in periparturient dairy cows

引用

Journal of Animal Science and Biotechnology 2021年第3期12卷 995-1007页

作者： Madison N.Myers Maya Zachut Joseph Tam g.andres contreras Department of Large Animal Clinical Sciences College of Veterinary MedicineMichigan State UniversityEast LansingMI 48824USA Department of Ruminant Science Institute of Animal SciencesAgricultural Research Organization/Volcani Center7505101 Rishon LeZionIsrael Obesity and Metabolism Laboratory The Institute for Drug ResearchSchool of PharmacyFaculty of MedicineThe Hebrew University of Jerusalem9112001 JerusalemIsrael

To sustain the nutrient demands of rapid fetal growth,parturition,and milk synthesis,periparturient dairy cows mobilize adipose tissue fatty acid stores through *** process induces an inflammatory response within AT that is resolved as lactation progresses;however,excessive and protracted lipolysis compounds the risk for metabolic and inflammatory *** suppression of lipolytic action and inflammation,along with amplification of adipogenesis and lipogenesis,serve as prospective therapeutic targets for improving the health of periparturient dairy ***,the activation of cannabinoid receptors by endocannabinoids enhances adipogenesis and lipogenesis,suppresses lipolysis,and increases appetite in *** biological effects of activating the endocannabinoid system open the possibility of harnessing the endocannabinoid system through nutritional intervention in dairy herds as a potential tool to improve dairy cows’health,although much is still to be revealed in this *** review summarizes the current knowledge surrounding the components of the endocannabinoid system,elaborates on the metabolic effects of its activation,and explores the potential to modulate its activity in periparturient dairy cows.

关键词： Adipogenesis Adipose tissue Dairy cow health Endocannabinoids Endocannabinoid system Lipogenesis Lipolysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effects of omega-3 supplementation on components of the endocannabinoid system and metabolic and inflammatory responses in adipose and liver of peripartum dairy cows

引用

Journal of Animal Science and Biotechnology 2023年第1期14卷 378-389页

作者： gitit Kra Jayasimha Rayalu Daddam Uzi Moallem Hadar Kamer Radka Kočvarova Alina Nemirovski gandres contreras Joseph Tam Maya Zachut Department of Ruminant Science Institute of Animal SciencesARO Volcani InstituteRishon LeZionIsrael. Department of Animal Science The Robert H.Smith Faculty of AgricultureFood and EnvironmentThe Hebrew University of JerusalemRehovotIsrael. Obesity and Metabolism Laboratory The Institute for Drug ResearchSchool of PharmacyFaculty of MedicineThe Hebrew University of JerusalemJerusalemIsrael. Department of Large Animal Clinical Sciences College of Veterinary MedicineMichigan State UniversityEast LansingMichiganUSA.

Background:Dietary supplementation of omega-3 fatty acids can reduce the activation of the endocannabinoid system(ECS)by decreasing the availability of arachidonic acid,thus lowering endocannabinoids(e CBs)*** ECS is a modulator of energy metabolism,stress response and inflammation in mammals,yet there is little information on the roles of the ECS in transition dairy *** the periparturient period,the adipose tissue and liver are the main metabolic organs that participate in the adaptations of dairy cows to onset of lactation;however,exceeded adipose tissue lipolysis and accumulation of lipids in the liver have adverse effects on cows'*** we aimed to examine whether omega-3 supplementation during the transition period will modulate ECS activation and affect metabolic and inflammatory indices in postpartum dairy cows,by supplementing twenty-eight transition Holstein dairy cows with either saturated fat(CTL)or encapsulated flaxseed oil(FLX).Components of the ECS,metabolic and inflammatory markers were measured in blood,liver,and subcutaneous adipose ***:FLX supplementation reduced feed intake by 8.1%(Pglycerol lipase was higher in peripheral blood mononuclear cells of FLX than in CTL(P=0.04).In adipose tissue,palmitoylethanolamide levels were lower in FLX than in CTL(by 61.5%;P=0.02),relative m RNA transcription of lipogenic genes were higher,and the protein abundance of cannabinoid receptor 2(P=0.08)and monoacylglycerol lipase(P=0.10)tended to be higher in FLX compared to *** 2-arachidonoylglycerol tended to be higher(by 73.1%;P=0.07),and interlukin-6 m RNA transcription level was 1.5 folds lower in liver of FLX

关键词： Adipose Dairy cows Endocannabinoid system Liver Omega-3

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Endotoxin-induced alterations of adipose tissue function: a pathway to bovine metabolic stress.

引用

畜牧与生物技术杂志(英文版) 2024年第4期 1391页

作者： Miguel Chirivi and g.andres contreras

来源：博看期刊评论

在线全文

博看期刊

学校读者我要写书评

暂无评论

Effects of omega-3 supplementation on components of the endocannabinoid system and metabolic and inflammatory responses in adipose and liver of peripartum dairy cows

引用

Journal of Animal Science and Biotechnology 2023年第1期

作者： gitit Kra Jayasimha Rayalu Daddam Uzi Moallem Hadar Kamer Radka Ko?varová Alina Nemirovski g.andres contreras Joseph Tam Maya Zachut

来源：博看期刊评论

在线全文

博看期刊

学校读者我要写书评

暂无评论

The Effect of Brain gym on global Cognitive Function of Institutionalized Older People

引用

International Journal of Mental Health Promotion 2022年第3期24卷 375-383页

作者： Araceli Cano-Estrada Araceli Jimenez-Mendoza Denny contreras-guerrero Mario Hernandes-Alejandro andres Salas-Casas Escuela Superior de Tlahuelilpan Universidad Autónoma del Estado de HidalgoTlahuelilpanHidalgoMéxico Escuela Nacional de Enfermería y Obstetricia.Universidad Nacional Autónoma de México Mexico CityMéxico Departomento de Bioingenieria Unidad Profesional Interdisciplinaria de Biotecnología del Instituto Politecnico Nacional(UPIBIIPN)Mexico CityMexico Instituto de Ciencias de la Salud.Universidad Autónoma del Estado de Hidalgo.Pachuca Hidalgo.México.Scuela Superior de TlahuelilpanUniversidad Autónoma del Estado de HidalgoTlahuelilpanHidalgoMéxico

Cognitive function of older adults is influenced by several factors such as age,sex,education,and physical activity so that it can impact the decrease in progressive cognitive *** is necessary to implement cognitive training in old people’s care to prevent or delay the onset of age-related cognitive *** gym is a series of simple motion exercises and is an alternative therapy that stimulates the *** study aims to evaluate the effect of brain gym as a cognitive training intervention on global cognitive functioning of institutionalized older *** study is a non-randomized quasi-experimental one using pre-and post-test control group *** participants of the study were 65 years old or older who had been part of gerontological centers from a local *** were divided into two groups:control and intervention,each one with 15 ***-Mental State Examination was applied to the sample before and after the cognitive *** brain gym training consists of bi-weekly group meeting for 12 weeks,lasting 50 min *** treated group had a significantly better global cognitive ***(memory),orientation and language skills were the domains with the most significant changes(pgnificant changes were found in the participants of control groups during post *** results suggest that cognitive training based in brain gym improves global cognitive function of institutionalized older people lease type your abstract *** of a research paper is typically 200 to 400 words in length,and 150 to 300 words for a review *** shall be running continuously(not structured)and shall not include reference *** that appear only once in the abstract should be defined in *** abbreviations appear more than once,the full definitions should be provided first before they can be used elsewhere.

关键词： Cognitive function brain gymnastic older people gerontological center physical activity

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：